This article describes a way to get the headphone out on the front side of Apple's MacPro 1,1 from August 2006 up and running.
In February 2014 this enhancement had been integrated in upcoming stable kernel release 3.14. If you use a recent kernel it might happen that your MacPro's headphone out at last is working.
The following article describes my approach to the configuration of the kernel when dealing with ALSA and illustrates the search for clues with the help of HDA-Analyzer.

Accessing icloud calendar data from within Thunderbird with the help of the
Lightning add-on is feasible. The easiest way is to get the relevant code numbers out of
Icloud's online version by using Firefox tools and transfer the codes to Thunderbird.